Finding the Third Proportional to 9,880 and 13,012

Step by Step Solution

1. Step 1: Write the proportion equation
   9,880 : 13,012 = 13,012 : x
2. Step 2: Convert to fraction form
   9,880/13,012 = 13,012/x
3. Step 3: Cross multiply
   9,880x = 13,012 × 13,012
4. Step 4: Simplify right side
   9,880x = 169,312,144
5. Step 5: Solve for x
   x = 169,312,144/9,880
6. Step 6: Final answer
   x = 17,136.86